Remy 12858 Alternator

Remanufactured Alternator for Ford and Lincoln

The Remy Premium Remanufactured Alternator, part number 12858, is a 12-volt charging system component built for select Ford and Lincoln vehicles. It delivers 175 amps with an internal regulator and internal fan design, and includes the pulley for a direct replacement application.

Key Features

• 175 amp amperage rating for higher electrical demand
• Remanufactured to Remy Premium Remanufactured standards
• OE manufacturer reference: Mitsubishi
• Internal voltage regulator for integrated charging control
• Internal fan type for alternator cooling
• Clockwise rotation
• Pulley included
• 12-volt electrical system

Product Details

Remy 12858 is a remanufactured alternator for drivers needing a replacement charging unit for Ford Edge, Ford Explorer, Ford Flex, Ford Taurus, Ford Taurus X, Lincoln MKX, Lincoln MKS, and Lincoln MKT applications. This part cross-references A3TX0091 for the same application. The 175 amp output supports vehicles equipped with higher electrical loads, including configurations noted with heated and cooled front seats and plug-in-from-side-of-alternator connections.

Compatible vehicle coverage includes Fits 2011-2013 Ford Edge, N/A; Fits 2011-2012 Ford Explorer, N/A; Fits 2009-2011 Ford Flex, N/A; Fits 2010-2011 Ford Taurus, N/A; Fits 2008-2009 Ford Taurus X, N/A; Fits 2011-2013 Lincoln MKX, N/A; Fits 2009-2011 Lincoln MKS, N/A; and Fits 2010-2012 Lincoln MKT, N/A. Additional fitment includes 2012 Ford Flex, 2012 Ford Taurus, and 2012 Lincoln MKS with the listed connector and equipment notes.

Common Replacement Reasons

• Battery warning light or charging system warning
• Low charging output or unstable voltage
• Dim lights or electrical accessories losing power
• Noise from a worn alternator bearing or internal wear
• Failure on vehicles with higher accessory electrical demand

Installation Notes and Tips

Verify the pulley style, clockwise rotation, connector location, and amperage rating before installation. Confirm the vehicle’s charging system requirements and match the application notes for side-plug configurations and heated/cooled seat equipment where listed. Inspect the belt, battery condition, and charging circuit connections during replacement to help avoid repeat failure.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured electrical components built to restore charging-system function with OE-style fit and specifications. Part number 12858 is referenced to Mitsubishi original equipment design for the listed Ford and Lincoln applications.